Surface modification of polyamide by SWCNTs for application in SLS 3D printing

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2025-02-26 DOI:10.1016/j.compositesa.2025.108829

Shiyanova Kseniya , Torkunov Mikhail , Gudkov Maksim , Gulin Alexander , Knyazeva Alina , Ryvkina Natalia , Khashirov Azamat , Rabchinskii Maxim , Chmutin Igor , Melnikov Valery

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Abstract

The development of approaches to the creation of new materials with functional properties is one of the main directions for progress of their application in various fields. This work proposes an approach to surface modification of polyamide-12 (PA) powder with single-walled carbon nanotubes (SWCNTs) to impart electrical conductivity and create a material suitable for selective laser sintering (SLS) 3D printing. A previously unknown transition in the conductivity character change with increasing SWCNTs content on the surface of polymer powder particles, demonstrating a change in the state of the electrically conductive network from quasi-planar to spatial, was discovered. The main parameters of the resulting powders were also studied, which determine the possibility of their use for the SLS method: flowability, compactability, transmittance and morphology. As a result, a simple method of new materials obtaining based on PA/SWCNTs with high electrical conductivity was proposed, which are suitable for application in 3D printing.

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利用 SWCNT 对聚酰胺进行表面改性以应用于 SLS 3D 打印

开发具有功能特性的新材料是其在各个领域应用的主要方向之一。本研究提出了一种用单壁碳纳米管（SWCNTs）对聚酰胺-12 （PA）粉末进行表面改性的方法，以赋予其导电性，并创造出一种适合选择性激光烧结（SLS） 3D打印的材料。研究发现，随着聚合物粉末颗粒表面SWCNTs含量的增加，电导率特性发生了以前未知的转变，表明导电网络的状态从准平面转变为空间。研究了所得粉末的主要参数：流动性、压实性、透光率和形貌，确定了其用于SLS法的可能性。因此，提出了一种基于PA/SWCNTs制备高导电性新材料的简单方法，该方法适用于3D打印。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.